Home / 1,087.18-1,631.30-532.58

Finding the Fourth Proportional to 1,087.18, 1,631.30 and 532.58

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Solution

The fourth proportional to 1,087.18, 1,631.30 and 532.58 is: 799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.18 : 1,631.30 = 532.58 : x
  2. Step 2: Convert to fraction form
    1,087.18/1,631.30 = 532.58/x
  3. Step 3: Cross multiply
    1,087.18x = 1,631.30 × 532.58
  4. Step 4: Simplify right side
    1,087.18x = 868,797.75
  5. Step 5: Solve for x
    x = 868,797.75/1,087.18
  6. Step 6: Final answer
    x = 799.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.